Question: What is alphabet  language signed of  Ōe no Yoshitoki ?
Paraphrase: Ōe no Yoshitoki signed what alphabet language?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q3594014 wdt:P1412 ?X . ?X wdt:P282 ?answer}
Answer: hiragana, Kanji, Katakana, kana